Plain bearing



Patented Sept. 17, 1935 j UNITED s'rA'rEs PATENT ori-ica v :,ousss G Wilhelm Peillleke., Berlin, El!! me, Balillm me rem-m:

lign Schuckertwerke Aktiengesellschaft, Berlin-Siemensstadt, Germany, a corporaon of Germany Original applieationsept'ember 21, 1931, Serial No. 584,062. Divided and this application May 5, 1934, Serial No. 724,026. In Germany April 11, 1931 i 2 Claims. (Cl. 303-121) Our invention relates to a plain bearing which At one point of its circumference thecarrier may be substituted for 'an anti-friction bearing without modifying the bearing housing andwhich l is lubricatedY by a wick arranged around the shaft. 'I'he invention refers in particular to certain modifications of this type of convertible bearing, originally disclosed in our copending application Serial No. 564,062, filed September 2l, 1931, of which ,the present application is a division. m According to our invention a particularly simple design of the plain bearing may be attained by arranging the wick in a preferably channelled ring carrying the shaft. The advantage of this arrangement consists in the fact that the bearing is ready for service in every vposition because the oil always remains in the lubricating wick and cannot accumulate outside ,Y the latter in certain positions ofthe wick. 'Thus all of the oil is bound to be conducted to the running surfaces of the bearing.

The annular body can be formed like a calotte on the outside or it can have a corresponding projection for providing simple adjustment of the bearing and to prevent pressure where it is not wanted. 'I'his type of bearing, therefore, offers free adjustment of the bearing whereas with normal plain bearings, high pressures can easily ocom. p 'I'he invention is-illustrated in the accompany- '4 ing drawing in which Figs. 1a and 1b each represent a' longitudinal section through one-half of the bearing, Fig. '1bj showing a slight modification of the bearing support over Fig. 1a;

Fig. 2 represents a central transverse section ythrough the bearing Fig. la, and

A Figs. 3 and 4 each representa longitudinal section through one-half of a modified bearing con- 40 struction.

y Referring to Figs. la and 2, onl a shaft is disposed a sleeve ||2 of hard material, e. g. steel, cast iron, hardened bronze, etc. The ring is journailed in a sleeve III which is surrounded Vby an annular, channelled carrier |I4 with a U-shaped cross-section. Outside the carrier hasa calotte shaped ridge H5. Carrier ||4 contains lubrif cating v'wick Iii which comes into contact with the running surface of the shaftsleeve -by way 'of the recesses of bearing sleeve '||3, the

actual contact being with sleeve ||2 on the shaft which is thus lubricated. -In order to guarantee uniform lubrication of the whole running surface, longitudinally directed lubricating recesses lil are provided in sleeve m.

||4hasabore |22 whichisclosedbyascrew plug |22l and is used for introducing oil and for inserting and removing the lubricating wick lil. The screw plug closing opening |22 is best made to project a little inwardly from the wall of carrier i i4 as shown in order to prevent the lubricating wick IIIA from following the rotation of the shaft. The carrier |14 is surrounded by a transversely split casing Il! which, as shown in Hg. 1. 1a.*has flanges |22 on the outer sides with which the two casing halves lcaniche attached to the- .f bearing bracket |2| of an electric motor or to the bearing bracket of any` other machine in which they serve. Instead of the split casing ill servjg ing directly for the support of the carrier lil it is also possible, as shown in Fig. 1b, to sin-round the carrier H4 by one or two rings |22 which are held in position by covers |24 such as are used for ball bearings.

The free alining movement of the bearingcan also be obtained by providing the outer periphery of carrier IM with a smooth rim |25 as shown inFig. 3. Ifthereisnospecialcasingprovided,

v suchasisshown, foi-instance, at illinFig. la

this rim restsagainst the cylindrical recess of Y bracket |2| so that in view of` the Anarrow resting surface of rim |25 easy adju-stability ofthe bearing is rendered possible.

AswillbeseeninFig. 4thegrooveincarrierl0 ||4 serving for accommodating the lubricating wick lli can be outside in which case the 'carrier is surrounded by a sleeve |26 which again is ln'ovided with anarrow rim |21. In order to provide with such a can'ier form contact for the 35 wick ith the shaft bearing surface. also in this case tne bearing sleeve H2 is provided with one or several peripheral cut away portions similar to those shown at lil in Eig. 2, and in addition the bottom of the groove in carrier ill is 40 provided with similar cut away portions ill, each of which registers with a reces iil in sleeve `.is camel; m nsagreatuembr playin the opening ofthe bracket due to the calotte surface 4,5'

IIS of Fig. l or the rims |25 and |2'Irof Hgs. 3 and4,shaft|||caneasi1yalineitselfsothatnp impermissible side pressures manifest themselves atthetwoendsofthebearing. Thebearingas described herein is, therefore. peculiarly adapted 50 for electric motors whose shafts call for a `cer- Y tain adjustment especially when a holt pulley is provided.

We claim as our invention: I" 1. In abearing, convertiblefrom abalibearing 55 a plain bearing or a similar size ball bearing, a channelled ring removably disposed in said housing, and a bushing of bearing metal within said ring, said bushing having a recess extending to the surface of said shaft, said ring having its open side presented to said bushing, and having an annular rib on its outer surface lying against said housing to secure radial alinement of the shaft, a wick housed in said ring and contacting with the shaft through said recess, and lateral lids secured against the sides of the housing for closing the bearing and for holding said ring in position.

2. In a bearing, convertible from a ball bearing into a plain bearing, in combination, a shaft, a

'into a plain bearing, in combination, a'shaft, a

bearing housing having a bore adapted to receive bearing housing having a bore adapted to receive a plain bearing or a similar size ball bearing, a channelled ring of bearing metal disposed in said y bore and serving as a plain bearing, a bushing for 

